Number of length 4+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
A249089
Number of length 4+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
Terms
- a(0) =22a(1) =243a(2) =4136a(3) =27213a(4) =108018a(5) =454487a(6) =1365188a(7) =3374725a(8) =8157330a(9) =17098293a(10) =32231592a(11) =59778995a(12) =102570498a(13) =165348629a(14) =263953640a(15) =401180967a(16) =586241418a(17) =850471689a(18) =1195787840a(19) =1634832071a(20) =2224059510a(21) =2958717373a(22) =3859429656
External references
- oeis: A249089